/*
 * Tencent is pleased to support the open source community by making Angel available.
 *
 * Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 *
 * https://opensource.org/licenses/Apache-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 *
 */


package com.tencent.angel.ml.tree.conf

/**
  * Enum to select ensemble combining strategy for base learners
  */
object EnsembleStrategy extends Enumeration {

  type EnsembleStrategy = Value

  val Average, Sum, Vote = Value

  def fromString(name: String): EnsembleStrategy = name match {
    case "average" | "Average" => Average
    case "sum" | "Sum" => Sum
    case "vote" | "Vote" => Vote
    case _ => throw new IllegalArgumentException(s"Did not recognize EnsembleStrategy name: $name")
  }
}

